Fenton 法对老龄垃圾渗滤液难降解有机毒物的削减[J].pdf

文档介绍：环境 1 工程
年月第卷第期
2012 2 30 1 93
Fenton 法对老龄垃圾渗滤液难降解有机毒物的削减*
李平吴锦华朱能武吴平霄
( 华南理工大学环境科学与工程学院,广州)
510006
摘要: 采用法进行削减老龄垃圾渗滤液难降解有机毒物的实验,研究了初始值 2 + 投加量投加量
Fenton pH 、Fe 、H2 O2 、
反应时间等对难降解有机毒物削减效果的影响,采用呼吸耗氧速率法和发光细菌的相对发光度法评估了 Fenton 法对
处理前、后老龄垃圾渗滤液可生化性的改善程度和生物毒性削减情况。结果表明: 当初始 pH 值为 3. 0,Fe2 + 投加量为
, 投加量为( ( ) ( 2 + ) ) ,反应时间为时, 法对难降解有机物去
17. 6 mmol / L H2 O2 88. 2 mmol / L n H2 O2 / n Fe = 5 2 h Fenton
除率达到 84. 7% ,以 COD 表征的有机物去除率达到 60. 3% 。经 Fenton 法处理后水样呼吸耗氧速率较原水提高了
3. 35 倍,可生化性显著提高; 发光细菌相对发光度从原水的 1. 9% 提高到 57. 2% ,处理后渗滤液的生物毒性得到较大
幅度削减。
关键词: ; ;Fenton; 毒性; 可生化性
TREATMENT OF ANIC TOXICANT IN OLDER
LANDFILL LEACHATE BY FENTON METHOD
Li Ping Wu Jinhua Zhu Nengwu Wu Pingxiao
( , , , )
College of Environmental Science and Engineering South China University of Technology Guangzhou 510006 China
:
Abstract Fenton method was applied in the treatment test of anic toxicant in older landfill leachate. The
, 2 + , ,
effects of reaction conditions such as initial pH Fe dosage H2 O2 dosage reaction time on detoxification of the biorefractory
, ( )
organic toxicant in older landfill leachate were studied. The biodegradability evaluated by Oxygen Uptake Rate OUR of
, , ,
Respiration method and the toxicity evaluated by the relative luminosity of Photobacteria of landfill leachate before and after
, 2 + ,
Fenton's treatment were evaluated. The